Mixing device.



W. WALCH.

MIXING DEVICE.

APPLICATION FILED NO V- 23. 1914.

1,170,788. I v Patented Feb. 3, 1916.

' Wdzmmmm.

2.. ran STATES PATENT QFFICE. A

WILLIAM WALCH, or ROCKWELL, IOWA.

MIXING DEVICE.

Application filed November 23, 1914. Serial No. 873,520.

The-object of the invention is to use portion of the exhaust gases'to heat the ex-- plosive charge, to use some of these gases in the charge for the sake of economy of fuel, and to provide an additional supply of heated air to the charge after carhuretion.

With. these and other objects in view, the invention consists in the construction and arrangement of parts hereinafter described and particularly pointed out in the claims, it being understood,however, that I do not intend to limit myself to the details of construction.

The invention is illustrated in the accompanying drawing in which:

' Figure '2 illustrates diagrammatically the side of an engine with my device applied thereto, and Fig. 2, shows a front view of the engine with my device attached thereto.

In the drawings, the numeral 1 indicates the diagrannnatical representation-of the engine towhich my device is attached, 2 the exhaust thereof, and 3, a passage over the exhaust and communicating therewith into which some of the exhaust will rise. Th s passage 3 is tapped by a downwardly extending pipe i.

i indicates the intake manifold or pipe of the engine. (I; the pipe leading from the carburetor T thereto adapted to carry the carbu-i tcd char-g.

8 indicates ir intake of the carburetor T and 5?. the gasolenc teed pipe.

(in the pipe -l a coupling 10, having a' damp r or cutoli' 11 therein, operated by a hollow tube or pipe 12 leading to the dashboard 13 or other convenient place. This pipe 12 has a ficxible but continuous connection at 14 so that rotary movement of the pipe 12 from the dashboard will. operate the damper or cutoii 1.1. The tube or pipe 152 is hollow and the iliible connection 14 is continuous to permit azr to be taken into the Specification of Letters Patent,

memes; Feb. 8, 191a.

pipe 12 at the dashboard as at 15 and conducted to the coupling 10 and introduced thereinto. Over the end 15 of the pipe 12 is provided a lever 16 pivoted on the pipe 12 for controlling admission of air to the end 15 of the pipe and also as a ready means for rotating the pipe 12 enough to operate the cutoff 11in the coupling 10. To the coupling .10 is secured a pipe 17 forming a continuation of the pipe that larger'tha-n that pipe'to accommodate the air taken in through the pipe 12. This pipel? connects with the intake pipe 6 at a ,point below where the carbureted charge enters it at 18, but as near thereto as possible.

The operation of the device is as follows: To start the engine, all air from the dashboard is first cut off by the lever 16. but the cut-off ll' is left open. In running, a part of the hot gases of the exhaustin the pipe 2 rise into the pipe 3 from which they flow down the pipes 4: and 17 and up the pipe (3, this latterbecause of the suction. in that pipe. Thus when the carbureted charge from the carburetor enters the pipe 6, it does not meet a cold pipe where it condenses but instead strikes an upward moving column of hot gas from the exhaust. -This absolutely prevents any condensation at that point besides assures the vaporization of any of the fuel that may have passed through the carburetor unvaporized. If on a hot day or after the engine has become thoroughly warmed up, this. supply of hot gas may be stopped or lessened if desired by simply turning the lever 16 to the right or left, or, air may be mixed with these exhaust gases by pressing the lever 16 down. This 'supplei'nenting of the carburetcd charge with hot exhaust having some air mixed therewith not only causes more eflicient oporation of the engine but causes a. marked saving of fuel. The complete vaporization oi the charge assured by its striking the hot upward blast in the intake pipe 6 causes such pert'cct combustion in the explosions, that the engine can be throttled down to amuchslowcr speed than formerly. Also thc of the exhaust gases may be condneted into the intake pipe, 1neans'f0r adding air to the an ai1"supplyingpipe in said connection a carbureter on said intake pipe adapted to deliver its carbureted charge into said exhaust 15 "gases therein, and combined means on the dashboard of the antolnobilefor controlling 'said'cutofi and said air-supplying pipe. Signed at Rockwell, Iowa, this 17th. day

of November, 1914.

WILLIAM \VALCH. \Vitnesses I R. Gouen,

- J\NTI1OXY Samoan. 

